How to compare a single word of multi word string to another multi word string?

Question

For e.g I want to compare these two
Str1- Mary has lamb
Str2- I have lamb and sheep
So here in both lamb is common. Then how am I supposed to write this in code where two strings are entered by user and in output common word is printed.

Answer 1

You can use sscanf() to read one word at a time from Str1. Then maybe use strstr() to find whether each word is in Str2.

Now there is another problem to tackle. Example: Str1 "find a word", Str2 "a boat floats". strstr() will find "a" in all three words of Str2. Only one of them is a whole word.
I have solved this by adding space delimiters. Instead of searching for "a", surround it with space delimiters, like " a ". Also surround Str2 with space delimiters like " a boat floats ". Now strstr() will find only whole word matches.

Answer 2

Although you can use loops to perform character by character comparison but in C there is a built-in library function(in <string.h> header) strcmp() which can be used for that purpose.

Learn more about it here👇
https://www.geeksforgeeks.org/strcmp-in-c-cpp/

Answer 3

Arsenic strcmp() would compare whole string or can we use it compare a part of string line as in case I've asked above.

Answer 4

Sneha Bisht strcmp() compares whole string.